Corrupt rot

Amorphous. The ooze can move through a space as narrow as 6 inches wide without squeezing.

Leech blood. A creature that touches the ooze or hits it with a melee attack while within 5 feet of it takes 6 (1d8+2) necrotic damage corrupt rot gains half the damage dealt as Hp.

Spider Climb. The pudding can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Putrid corruption. when ever a creature dies to Corrupt rot it will resurrect as a zombie in 1d4+1 hours

Multiattack. The ooze makes two attacks: one with its Blob blast and one with its slam

Blob Blast. ranged attack: +5 to  hit, reach 35 ft., one creature. hit 10 ( 2d6+3) acid damage plus 2 (1d4) necrotic and 2(1d4) poison damage. Corrupt rot loses 2d8 +2 Hp and creates an copy of corrupt rot with tiny size 2d8 hp and one attack: Slam. melee attack: + 5 to hit, reach 5 ft., one creature. hit 5 (1d4+3) acid plus 3 necrotic damage. Having a creature within 5 ft does not incur disadvantage.

Draining slam. melee attack: +5 to hit, reach 5 ft., one creature. hit 13 (3d6+3) acid damage plus  3(1d6) necrotic and 3(1d6) poison damage. Corrupt rot gains half of the damage dealt as Hp.